# CVE-2026-54609

## Summary

- **CVE ID:** CVE-2026-54609
- **Severity:** HIGH
- **CVSS Score:** 8.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
- **CWE:** CWE-400, CWE-406, CWE-770
- **Published:** Jul 28, 2026
- **Last Modified:** Jul 28, 2026

## Description

QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECT_REQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of service on the host. No fixed version is available as of this review.

## Affected Products

- Quiet-Terminal-Interactive — QTINeon (1.0.0)

## References

- [CNA](https://github.com/Quiet-Terminal-Interactive/QTINeon/security/advisories/GHSA-85rg-p3fr-xc2f)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 18.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._